Preparation method of polylactic acid fiber pre-spinning colorant

A technology of polylactic acid fiber and pre-spinning coloring, applied in the fields of fine chemical industry and material science, to achieve the effect of high surface energy and good compatibility

Active Publication Date: 2018-05-29
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN102585450A discloses a solvent-carrier color masterbatch suitable for coloring polyester products such as PET, PBT, PETG, PEN, etc. CN101597814A discloses a method of mixing polylactic acid carrier-type color masterbatch with white polylactic acid melt to prepare colored polylactic acid The method of fiber, but for polylactic acid fiber, pigment is modified and manufactured polylactic acid color silk has not been reported yet

Method used

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  • Preparation method of polylactic acid fiber pre-spinning colorant
  • Preparation method of polylactic acid fiber pre-spinning colorant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Put 1g of carbon black, 1g of silane coupling agent KH560, 60g of absolute ethanol, 6g of deionized water and 0.2g of ammonia into a beaker for ultrasonic treatment for 15min, then transfer to a three-necked flask, stir at 40°C for 12h, and then use Centrifugal cleaning with absolute ethanol for several times, drying, and grinding for later use; place a three-necked flask with constant speed stirring in an oil bath at a certain temperature, vacuumize and flush with nitrogen, and pour the above-mentioned modified pigment into 100g of tetrahydrofuran solution placed in an ultrasonic machine for ultrasonic treatment for 30 minutes, and then transferred to the flask together with 1 g of lactide. When the lactide began to dissolve, 0.03 g of stannous octoate was added dropwise, condensed and refluxed for a certain period of time. After the reaction, it was centrifuged and washed several times, and excess polylactic acid was washed away with chloroform, and finally put into a ...

Embodiment 2

[0026] Put 2g of aluminum powder, 1g of silane coupling agent KH560, 70g of absolute ethanol, 6g of deionized water and 0.25g of ammonia into a beaker for ultrasonic treatment for 15min, then transfer to a three-necked flask, stir at 40°C for 24h, and then use Centrifugal cleaning with absolute ethanol for several times, drying, and grinding for later use; place a three-necked flask with constant speed stirring in an oil bath at a certain temperature, vacuumize and flush with nitrogen, and pour the above-mentioned modified pigment into 100g of tetrahydrofuran solution placed in an ultrasonic machine for ultrasonic treatment for 30 minutes, and then transferred to the flask together with 1g of lactide. When the lactide began to dissolve, 0.05g of stannous octoate was added dropwise, condensed and refluxed for a certain period of time. After the reaction, it was centrifuged and washed several times, and excess polylactic acid was washed away with chloroform, and finally put into ...

Embodiment 3

[0028] Put 2g of titanium dioxide, 1g of silane coupling agent KH560, 70g of absolute ethanol, 6g of deionized water and 0.25g of ammonia into a beaker for ultrasonic treatment for 15min, then transfer to a three-necked flask, stir at 40°C for 24h, and then use Centrifugal cleaning with absolute ethanol for several times, drying, and grinding for later use; place a three-necked flask with constant speed stirring in an oil bath at a certain temperature, vacuumize and flush with nitrogen, and pour the above-mentioned modified pigment into 100g of tetrahydrofuran solution placed in an ultrasonic machine for ultrasonic treatment for 30 minutes, and then transferred to the flask together with 1g of lactide. When the lactide began to dissolve, 0.05g of stannous octoate was added dropwise, condensed and refluxed for a certain period of time. After the reaction, it was centrifuged and washed several times, and excess polylactic acid was washed away with chloroform, and finally put into...

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Abstract

The invention discloses a preparation method of a polylactic acid fiber pre-spinning colorant, and belongs to the technical field of fine chemical engineering and material science and technology. According to the preparation method provided by the invention, nano modified pigment is prepared by an in-situ polymerization method, and the nano modified pigment is used for pre-spinning coloring of polylactic acid fibers. The modified pigment prepared by the method has a small particle size, narrow distribution and a relatively high surface energy, wherein the particle size is about 200nm, the PDIis about 0.2, and the surface energy is about 38.5; and the modified pigment is similar to polylactic acid, and thus has good compatibility with a polylactic acid fiber spinning solution.

Description

technical field [0001] The invention relates to a preparation method of a polylactic acid fiber pre-spinning colorant, which belongs to the technical fields of fine chemical industry and material science. Background technique [0002] Polylactic acid (PLA) fiber is a kind of fiber made from corn, wheat, sugar beet and other starchy agricultural products, which are fermented to produce lactic acid, and then polycondensed and melt-spun. It is a kind of raw material that can be planted and is easy to plant. , synthetic fibers that are naturally degradable in nature. PLA fiber has good biodegradability and can be completely decomposed in nature after being discarded. If polylactic acid fiber is buried together with other organic wastes, it will be decomposed into carbon dioxide and water within a few months. It can also be decomposed into carbon dioxide and water by microorganisms in soil or seawater. It will cause pollution and is a sustainable ecological fiber. The fabric o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/08C08G63/78C08K9/06C08K3/04C08K3/08C08K3/22D01F1/04D01F6/92
CPCC08G63/08C08G63/78C08K3/04C08K3/08C08K3/22C08K9/06C08K2003/0812C08K2003/2241D01F1/04D01F6/92
Inventor 付少海张丽平张连松李敏田安丽
Owner JIANGNAN UNIV
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